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Finding the Fourth Proportional to 20,358.60, 30,538.17 and 5,568.72

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Solution

The fourth proportional to 20,358.60, 30,538.17 and 5,568.72 is: 8,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.60 : 30,538.17 = 5,568.72 : x
  2. Step 2: Convert to fraction form
    20,358.60/30,538.17 = 5,568.72/x
  3. Step 3: Cross multiply
    20,358.60x = 30,538.17 × 5,568.72
  4. Step 4: Simplify right side
    20,358.60x = 170,058,518.04
  5. Step 5: Solve for x
    x = 170,058,518.04/20,358.60
  6. Step 6: Final answer
    x = 8,353.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.